Texas
Distance from Austin to San Antonio
Straight-line distance
73.9mi
Austin, TX and San Antonio, TX are 73.9 miles (119.0 km) apart in a straight line. From Austin, the shortest path starts out heading SW (219°).
- kilometers
- 119.0
- nautical miles
- 64.2
- heading from Austin
- 219° SW
- heading from San Antonio
- 38° NE
Orange line: great-circle path · ring: midpoint · thin lines: county borders
How far Austin is from San Antonio
The great-circle distance between the Census internal points of Austin and San Antonio is 73.9 miles, 119.0 km or 64.2 nautical miles. That is the shortest path over the Earth's surface, computed with the haversine formula on a sphere with the mean Earth radius, 6,371.0 km. A course held on one compass bearing (a rhumb line) would be 73.9 miles, practically the same at this range.
Measurements
- Miles
- 73.9
- Kilometers
- 119.0
- Nautical miles
- 64.2
- Bearing from Austin
- 218.8° SW
- Bearing arriving at San Antonio
- 218.4°
- Bearing from San Antonio
- 38.4° NE
Halfway between Austin and San Antonio
The great-circle midpoint is at 29.881259, -98.140965 (29°52'52.53"N 98°08'27.47"W). The nearest incorporated place of 1,000 or more people is Wimberley, TX, with 2,889 residents, 7.8 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.
Time zones and daylight
Both use America/Chicago, so there is no time difference. On June 21, Austin gets 14 h 06 min of daylight and San Antonio 14 h 02 min; on December 21, 10 h 11 min and 10 h 15 min. Austin is 0.84° farther north, so it has the longer summer days and the shorter winter ones.
Population compared
San Antonio has 1.5 times the population of Austin. From July 2020 to July 2024, Austin changed by +2.9% and San Antonio by +6.1%. Both are in Texas.
- 01Austin, TX993,588 (+2.9%)
- 02San Antonio, TX1,526,656 (+6.1%)
Questions people ask
How far is Austin from San Antonio?
73.9 miles, 119.0 km or 64.2 nautical miles along the great circle between the two Census internal points. Road distance is longer.
Which direction is San Antonio from Austin?
SW. The great-circle path leaves Austin on a bearing of 218.8° and arrives at San Antonio on 218.4°. The return trip starts on 38.4°.
What is halfway between Austin and San Antonio?
The midpoint is at 29.881259, -98.140965. The nearest incorporated place of 1,000+ is Wimberley, TX, 7.8 miles from it.
Is there a time difference between Austin and San Antonio?
Both use America/Chicago, so there is no time difference.
Which is bigger, Austin or San Antonio?
San Antonio, with 1,526,656 residents in July 2024 against 993,588 for Austin, 1.5 times as many.
Sources and data as of
Data as of: Census 2024 Gazetteer internal points and Vintage 2024 estimates; time zones from Open-Meteo.
- 01Census 2024 Gazetteer, places
- 02Census Vintage 2024 subcounty population estimates
- 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
- 04IANA time zone database (clock times and daylight saving rules)
How every number is computed: methodology. Spotted a wrong figure? Report an error.